Weather-strip.



T. B. COUGHLAN.

WEATHER STRIP.

APPLICATION rum) NOV.16,1911.

Patented Oct. 27, 1914.

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THE NORRIS PE TERS r30 PHOTO LITHU, WASHINGTON D. c.

PATENT orn ron.

THOMAS B. COUGHLAN, OF DETROIT, MICHIGAN, ASSIGNOR TO CHAMBERLAIN METAL WEATHER STRIP COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHI- GAN.

WEATHERSTRIP.

Specification of Letters Patent.

lfatcnted Oct. 27, 1914.

To all whom it may concern:

Be it known that I, THOMAS E. COUGIILAN,

citizen of the United States, residing at Detroit, in the county of l/Vayne and State of Michigan, have invented certain new and useful Improvements in Weat-hprfitrips, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to improvements in weather strips and more particularly to metallic weather strips, it being the primary object of the mvention to provide an improved strip of the character mentioned adapted to form a tight and binding engagement between a sliding sash and its frame when the sashis closed, thereby in a more efficient manner providing against rattling and forming an air and water tight joint from end to end of the sash, and at the same time to provide a strip that will relieve the sash of the usual friction or binding tendency incident to the opening thereof.

To the above end, the invention embraces a metallic sealing strip adapted to be positioned upon, and connected as desired, to the usual frame of the window and a co'clpe ating metallic strip or lining to be positioned upon and connected as desired to the ad acent wall of the window sash, one of the said strips having a rib projecting at an angle to the body thereof and tapering from endlto end and the other strip a cooperating receiving groove or recess substantially similarly taper-ed whereby when the sash 1s moved to closing position the rib will become wedged in the recess formed by the side walls of the groove, and whereby when the sash is opened the same will be freed from frictional holding engagement, the groove constituting a loose guide for the rib in said opening operation.

For the purpose of convenience that portion of the construction forming the receiving groove or recess for the ribbed strip will be described and illustrated as applied to the sash, and the ribbed strip as applied to the frame for the sash though it is to be un derstood that these parts may be reversely arranged, and it is contemplated by the invention to provide a strip of the character stated which may be readily applied to windows of ordinary construction without the necessity of resorting to special tools and to this end the sash may be provided with a.

groove straight from top to bottom in which the metallic tapered groove of the strip is suitably positioned and held in place.

Further the invention embraces means whereby the walls of the receiving groove may give relative to the rib of the strip to accommodate itself to variations in the line of the latter, or vice versa, together with means whereby the strip will operate effectively at all times for the purposes recited regardless of the swelling and contraction of the frame or sash incident to weather conditions.

Other improven'lents and novelty details in the construction and arrangement of the parts will be more particularly referred to hereinafter in the description to follow and reference is directed to the accompanying drawings forming a part hereof, and wherein is disclosed for the purpose ofillustration convenient and satisfactory embodiments of the invention. y

In the drawings: Figure 1 is an elevation of a window frame cut away with the sealing strip applied thereto, Fig. 2 is a perspective view of the strip detached, Fig. 3 is a horizontal section illustrating the sash in position in the groove in the frame and in partially opened position, with the strip in place, Fig. 4; is a horizontal similar view, the sash being in closed position, and the mem bers of the strip being wedged or in binding relation, Fig. 5 is an enlarged detailed view of the l.iningstri1' s, and Fig. (3 is a slightly modified form of the lining strip constituting the receiving groove for thesealing strip.

\Vith more particular reference to the drawings, wherein like reference characters refer to corresponding parts tln'oi'lghout the nary construction having the usual sash, groove or guideway 2.

3 is a sealing strip the same being preferably formed of metal and having a relatively wide base or body part 3 adapted to rest upon the base of the sash groove and to be secured if desired in any convenient manner as by tacks 3 Arranged conveniently adjacent one edge of said strip is a scaling rib 3, the same being conveniently formed by striking up the metal. and extending from top to bottom of the strip and tapering to a relatively wide base portion. The said rib conveniently connects with a relatively short offset part 3 constituting in effect a for a clear understanding of the invention several views 1 is a window frame of ordicontinuation of the base 3 but preferably free from connection with the frame, whereby to permit the rib to accommodate itself to the receiving groove of the cooperating strip.

The sash 4 may be of ordinary construction but is preferably provided with a wooden body part to which the grooved strip is applied. This grooved strip may and preferably does constitute a part of a metallic casing 5 for said wooden body part. The said casing overlies the opposite surfaces of the sash and extends to the edge thereof as shown. The edge of said sash is provided with a groove 4& which eX- tends from top to bottom thereof, and to avoid the necessity of providing special. tools for the formation of a groove tapering from top to bottom, the said groove is preferably straight throughout and may be. easily formed. The casing 5 conveniently has an edge extension 5 overlying the edge of the sash and is struck up or otherwise provided with a groove 5*, which said groove tapers from top to bottom, in accordance with the taper of the rib 3, the said groove 5' being smaller however than the receiving groove 4 of the sash, as more clearly illustrated in Fi gs. 3 and 4, whereby to provide for the swelling and contraction of the sash, without destroying the taper of the groove 5 and preventing the side walls of the groove 5 from being forced inwardly and interfere with the ready operation of the sash. The casing 5 is conveniently severed at 5 thereby providing a rib which is yieldable throughout its length to accommodate itself to the rib of the strip on the frame, and conveniently the rib 5 which forms the receiving groove is slightly smaller in width than the rib 3, so that when the sealing rib of the frame engages the lining groove of the sash when the sash is closed, the flanges of the lining will be eX- panded somewhat to create a metallic bind ing engagement between the flanges of the lining and the sides of the receiving flange. Also the sealing rib is of a depth slightly in excess to that of the receiving groove whereby in the opening movement of the sash there will be but a line point of contact between the sash and frame, namely at the point of engagement between the base of the rib 3 and the base of the groove 5 If desired a sash of ordinary construction may be provided having a receiving groove substantially straight from top to bottom thereof, and the metallic lining for the groove may be formed in various ways, it being desired however to provide a lining so arranged in the groove as to permit of swelling and the like without interfering with the operation of said lining, and to permit of one or more of the side walls to give. As an illustration 1 have shown in the slightly modified construction of Fig. 6 a substantially U-shaped metallic lining 6 tapering from top to bottom and adapted to be secured as bynails 6 passing through the base of the U-shaped member leaving the opposite arms 6 of said strip free from engagement wherebythey may readily give to accommodate the groove to the sealing strip. l

The construction being as described the operation is obvious. W hen the sash is lowered into closed position the sealing rib will be wedged into binding engagement with the lls of the receiving groove 5' thereby proi ding against rattling of the sash and forming an air tight joint be tween the sash and frame. In the opening movement of the sash the same is relieved of any friction incident to the strip, and the relatively narrowline point of contact between the sealing strip rib and the base of the lining will assist in the openingoperation.

l t hat I claim is:

The combination with a window frame and a sash, one of the parts being provided with a vertical groove substantially rectangular shape in cross section and of uniform cross sectional area, of a weather strip including two flat metallic strips ,fitted against and secured to the window frame and the sash respectively so as to slide on each other in the raising and lowering of the sash, one of the strips being bent intermediate of its side edges to form a longitudinal groove, the bent portion fitting in the said groove and being approximately rectangular shape in cross section to line the same and tapered longitudinally so as to diverge from the walls of the said first mentioned groove and thereby allow for a yielding of the lining thereof, and the other strip being bent intermediate of its side edges to provide a hollow longitudinal rib substanti ally rectangular in cross section and slidable in and guided by the groove of the first mentioned strip and tapered longitudinally to wet re therein when the sash. is at the limit of its movement in one direction, said strips being attached to the sash and to the window frame at one side of the said bent pmrtions and being free at the opposite sides to permit a yielding of the rib and groove of the said strips.

In testimony whereof I my signature in presence of two witnesses.

THOM: S P. COUGELAN,

ll itnesses D. J. Haunts, CHAS. T. Vrivivnns.

Copiesof this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

